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Oliver Valvetek Product Range

Manually Actuated Subsea Gate Valves

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Oliver Valvetek offers a comprehensive range of engineered-to-precision Subsea Manually Actuated Gate Valves. Available in four different bore sizes - 3/8", 1/2", 3/4" and 1 inch, they are suitable for water depths of up to 10,000 ft and can withstand pressure ratings up to 15,000 PSI. We also offer a range of Hydraulically Actuated Gate Valves and Rotary Gate Valves.


Our Manually Actuated Subsea Gate Valves provide the end-user with low flow restrictions and metal-to-metal seat sealing isolation. We also utilise Tungsten Carbide hard facing technology which helps to ensure that the sealing is gas tight. This is extremely useful for applications such as chemical injection on subsea Christmas trees and Manifold Structures.

Suitable for ROV usage, our Manually Actuated Subsea Gate Valves have been used extensively by our customers all over the world for projects both small and large in size. Commonly found on Oil, Gas and Petrochemical projects, we offer both Half-Turn and Multi-Turn gate valves, offering truly uninterrupted flow of process through the valve and low operating torques.

We test and qualify each ROV gate valve to different pressure ratings and water depths. With a maximum pressure rating of 15,000 PSI (1,034 bar) and a maximum water depth of up to 10,000ft (3,050m), our Manually Actuated Subsea Gate Valves are some of the best performing in the industry.

We also perform qualification testing to the exacting standards of API 6A and 17D.

Manually Actuated Subsea Gate Valves
Bore Sizes3/8", 1/2", 3/4" and 1 inch
PSI RatingUp to 15,000 PSI
Water DepthUp to 10,000 ft (3,050m)
Temperature Classification-20F to +300F / -29C to + 150C

Position Indication

The Oliver Valvetek manual gate valve operated through a half (180degrees) turn. This provides simple visual indication to the ROV operator of the valve position.

Over-Torque Protection

The unique half turn operation means that if the valve is over torqued to a point where the end stops fail, the valve will simply continue to open and close. The valve can then be positioned in the open or closed position without any damage to the valve internals.

Low Operating Torque

The half turn feature combined with needle thrust bearings provides a low operating torque at full differential pressures.

Panel Mountable

The valve can be provided with a wide range of operators and receptacles to fit onto the designers ROV panel.

Uninterrupted flow passage through valve

While positioned on fully open, our manual subsea gate valves provide clear through bore with bare minimum restrictions on flow.